During a school fair, students joined a "push and pull" game using a rope. After the game, the teacher asked, Which body system helped you move your arms and pull the rope during the activity?

• The respiratory system, which helps the body breathe.

• The skeletal system, which supports the body to stand tall.

• The circulatory system, which pumps blood throughout the body.

• The muscular system, which makes the body move by pulling and pushing.

While learning about the human body in class, your teacher asks you to explain the importance of the skeletal system. Which of the following is a key function of the skeletal system?

• It helps the body digest food.

• It carries oxygen to the muscles.

• It helps the body fight infections.

• It gives the body shape and supports movement.

During a friendly basketball game in your neighborhood, you and your friends take a break to talk about how the skeletal system helps with movement. You explain that bones play an important role in the game. What do you share about the role of bones in helping you play?

• Bones protect your muscles from getting tired.

• Bones help you to breathe faster when you run.

• Bones help the body to grow taller during the game.

• Bones provide a structure for your body to move and jump.

After participating in a local community cleanup, you reflect on how lifting objects uses your muscles. What do you explain about muscle function during lifting?

• Muscles need to relax to lift heavy things.

• Muscles store energy while carrying objects.

• Muscles help bones grow stronger over time.

• Muscles contract to lift items from the ground.

During a science lesson, Mr. Castillo asks his students to share their ideas about the digestive system. Which of the following BEST summarizes its basic function?

• It pumps blood throughout the body.

• It helps lungs take in oxygen quickly.

• It removes waste from the body efficiently.

• It breaks down food and absorbs nutrients.

During a classroom discussion, your teacher asks about the circulatory system. What is one of its key components?

• It helps in the digestion of food.

• It includes the trachea and lungs.

• It contains the stomach and intestines.

• It helps in the distribution of key components.

While playing outside during recess, you feel out of breath after running around. A classmate asks you why you need to breathe so much. How would you explain the function of the respiratory system to your classmate?

• It helps the body digest food for energy.

• It helps the muscles move when you run.

• It helps the body break down food into energy.

• It helps the body take in oxygen and exhale carbon dioxide.

While reviewing a video on digestion, Mr. Cruz asks his students to explain a key step in the digestive process. What should they mention?

• Lungs expand to bring in more oxygen.

• Food travels through the blood to organs.

• The heart pumps blood to the lungs quickly.

• The stomach churns food and mixes it with acids.

During a workshop, Ms. Rosana discusses the importance of the circulatory system for athletes. What point should her students make?

• It removes waste from the body efficiently.

• It pumps blood to provide energy for sports.

• It transports nutrients to the brain quickly.

• It helps muscles grow stronger with exercise.

During a health class, Ms. Atienza explains the heart's role during exercise. What should her students learn?

• The heart stores energy for later use.

• The heart stops working when you are active.

• The heart cleans blood to prepare for exercise.

• The heart pumps faster to support physical activity.